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XULONG SPRING — spring manufacturing plant logo XULONG SPRING

A factory that started with hand coiling

47 years, two generations of one family, 145 employees. Today XULONG SPRING is a full-cycle factory: coiling, heat treatment, grinding, coating, testing and packing — all in one place.

Production building of the XULONG SPRING factory, Foshan, Guangdong
1 979
founded
47 years in spring manufacturing
145
employees
many with 15+ years in the industry
900
tons of springs per month
maximum capacity
80 mm
maximum wire diameter
minimum — 0.1 mm

History

How the factory developed

From a collective enterprise with hand machines to a smart factory with investments of about RMB 100 million — the key milestones.

  1. 1979

    The factory is founded

    A collective spring manufacturing enterprise is established in Shannan village (Foshan): hand coiling, springs for agricultural machinery, fewer than 5,000 parts per month.

  2. 1990

    First modernization

    A new director launches three transformations: hand machines give way to the first semi-automatic coiler, team-based contracting delivers +40% productivity, and the factory moves into springs for household appliances.

  3. 1996

    Incorporation and CNC

    The enterprise is incorporated as a joint-stock company and installs its first Taiwanese CNC coiling machine — accuracy improves by an order of magnitude. The customer base expands into the electronics industry of the Pearl River Delta.

  4. 2005

    New site and the XULONG brand

    The factory moves to a new site, capacity doubles, testing equipment is purchased (load-testing machines, projector). The large-diameter and furniture spring directions are established.

  5. 2012

    Automotive certification

    One of the first private spring factories in Guangdong province to pass ISO/TS 16949. APQP and PFMEA are implemented — quality planning and failure mode analysis.

  6. 2017

    The second generation

    The founder's elder son returns with an engineering degree (RMIT, Australia) and brings the principles of smart manufacturing into production.

  7. 2021

    40% exported

    The export share exceeds 40%: shipments to North America, Australia and South-East Asia — 15 countries and regions in total.

  8. 2025

    A new smart factory

    About RMB 100 million (≈1 billion RUB) invested in a new production site: a threefold capacity increase, a target of 120 million precision springs per year — including springs for new-energy vehicles, drones and medical equipment.

Equipment

Machine fleet and inspection line

60+
spring coiling machines
cold and hot coiling, CNC machines
12
heat-treatment furnaces
quenching and tempering
22
end-grinding machines
bearing coil machining
6
load-testing machines
up to 50 tons
1
2.5D projector
geometry inspection
1
salt spray chamber
coating tests
Cold coiling line: CNC spring coiling machines
Heat treatment area: glowing workpiece in a quenching furnace
Packing a finished batch of springs into wooden crates with retainers

Production

The full cycle on one site

Not a single stage is subcontracted — that is the foundation of consistent quality and lead times.

  1. 01

    Incoming wire inspection

  2. 02

    Coiling (cold / hot)

  3. 03

    Heat treatment: quenching and tempering

  4. 04

    End grinding and strengthening

  5. 05

    Coating

  6. 06

    Testing, packing, shipment

Request a quote

Want to see it for yourself?

We will arrange a video tour of the workshop for specific items, prepare documents for an audit and welcome your engineer or auditor at the factory.

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